Hello Michael,

On Wed, Jan 31, 2018 at 09:39:53AM +0100, Michael Howitz wrote:
> These versions are really old. You could try to omit `--no-binary 
> zc.recipe.egg` from the command line shown above and see if this is 
> successful. (`--no-binary zc.recipe.egg` is needed because otherwise modern 
> pip versions think that zc.recipe.egg is an egg and not the name of a 
> package. I don???t know what older pip versions without support for wheels do 
> in this case.)

Works for a while but then at some point setuptools_scm cannot be installed
automatically. If I download and install it manually in the virtualenv subdir 
before starting pip, the install for Zope2 seems to finish.

Same problem later with "./bin/pip install Products.ZSQLMethods":

 No local packages or download links found for pytest-runner

> This would be the first step I???d suggest: update the used virtualenv 
> package and create a new virtualenv to install Zope there.

virtualenv was installed with easy_install and easy_install says "Best match:
virtualenv 1.9.1", which is the current version. So what would be the best 
way to update virtualenv?

> Distribute is dead nowadays all its changes have been merged back into 
> setuptools. It is no longer needed/suggested to use distribute.

Yeah I get that.

> > -Switch to setuptools (probably the recommended way which would break most
> > things? :-))
> I don???t understand what you want to switch to setuptools.

My system. Because setuptools is not installed. If I install it while other
stuff was installed with Distribute, what is the probability that anything 
inside or outside my virtual environments will break? That's the question I'm 
asking myself.


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